Air-sander.



' No. 892,426. PATENTED JULY 7, 1908.

W. HUGHES.

AIR SANDER.

APPLICATION FILED OOT.29,1907.

2 SHEETS-SHEET 1.

No. 892,426. PATENTED JULY '7, 1908.

' W. HUGHES.

AIR SANDER.

APPLICATION FILED 0CT.29,1907.

2 SHEETS-SHEET 2.

lJ nvcwlioz Q01 tmeoaaa WILLIAM HUGHES, OF BEAVER MEADOWS, PENNSYLVANIA.

AIR-SANDER.

Specification of Letters Patent.

Patented July 7, 1908.

Application filed October 29, 1907. Serial No. 399,689.

To all whom it may concern:

Be itknown that I, WILLIAM HUGHES, a citizen of the United States, residing in Beaver Meadows, in the county of Carbon and State of Pennsylvania, have invented a new and useful Improvement in Air-Sanders, of which the following is a specification.

This invention relates to a sanding device in which the discharge spouts are controlled by a valve operated by compressed air and in which the sand will be discharged at the will of the engineer through either of two discharge ipes thereby avoiding waste of sand, whic waste occurs in sanding devices Where the sand is fed through both pipes when the feed of sand is required through one of the pipes only.

The invention consists of the novel features of construction hereinafter described, pointed out in the claims and shown in the accompanying drawings in which Figure 1 is an outlined view illustrating the location of the device upon a locomotive. Fig. 2 is a side elevation of my device. Fig. 3 is a front elevation. Fig. 4 is a vertical, longitudinal section. Fig. 5 is a horizontal section taken through a valve and valve caslng.

In these drawings 1 represents a sand box and 2 a sand pipe conveying sand from the box 1 to my device which consists of a casting 3 in the upper portion of which is fitted a rotatable valve 4 provided with a handle 5. By means of this valve flow of sand can be cut off between the sand box 1 and the lower portion of the casing 3, the front of said casmg being closed by a removable front plate 3*. By removing this plate and turning the valve 4 sand can be cut oil while cleaning damp sand from the lower portion of the casing. From this lower portion lead oppositely extending discharge nozzles 6 and 6. Within the lower portion is a valve casing which may be of brass or other suitable metal and which at one end carries a cylindrical sliding valve 8 provided with a piston 9 against which compressed air may work. To admit air to either side of the piston 9 passages 10 and 10 are formed in the casing 7 which is provided also with side openings 11 which communicate with said passages. The outer ends of the passages 10 and 10 being closed by reason of the casing 7bearing against the rear wall of the casting 3. With this construction the passages 10 and 10 can be very easily cleaned out by removing the valve casing 7 from the casting. The piston valve 8 works in a cylindrical chamber 12 formed in the valve casing and into which the passages 10 and 10 lead. At each end of the valve is an angle bore 13 which opens through the adjacent end of the valve and also through the side, one of said bores being in communication with the chamber 12 while the other is closed by the end of head portion of the chamber 12, as indicated by the dotted lines in Fig. 4. Discharge pi ms 14 and 14 lead respectively from the nozz es 6 and 6 and air devices 15 and 15 lead respectively to the passages 10 and 10.

The operation of the device is as follows When the device is in use sand flows throu h the pi e 2 into the casing 3 and downwarcfi into t e lower portion of the casing in which portion is arranged the valve casing 7. The sand is then acted upon by an air jet from either end of the valve 8, said jet issuing from one of the bores 13. When it is desired to discharge sand through the pipe 14 and to prevent discharge of sand through pipe 14 air is admitted through the pipe 15 and through the bore of passage 10 into the chamber 12. This forces the valve 8 toward the nozzle 6 in which it stays thus preventing passage of sand to the pipe 14. This also opens the passage of the pipe 14 through the nozzle 6 and the discharge of sand through said nozzle and through the pipe 14 is aided by the exhaust of air through the bore 13 one end of which is in alinement with the nozzle 6 while the other end communicates with the chamber 12. Should it be desired to discharge air through pipe 14, as when running backward, air is admitted through pipe 15 and the operation is reversed.

Having thus fully described my invention, what I claim as new and useful and desire to secure by Letters Patent is:

1. In a device of the kind described, a casing having oppositel arranged discharge nozzles, a iston vafve adapted to alternately seat itself in said nozzles and close the same, and means for admitting compressed air to said valve and upon either side of the piston.

2. In a device of the kind described a casing having oppositely arranged discharge 0 enings, a va ve casing, a sliding valve a apted to close over the said openings, a

piston on said valve and within the valve casing, and means for admitting compressed air into the valve casing and upon either side of said piston.

3. In a sanding device a casting interposed between two discharge pipes and the feed pipe, a piston valve arranged in said casting and ada ted to automatically open and close sai discharge pipes, and means for reciprocating said valve.

4. In a device of the kind described comprising a casting having a cut oif valve at its valve between the air passages, and means for admitting air to either of said airpassages, the said piston valve having exhaust bores at each end.

5. The combination with a sanding device comprising a casting having discharge openings at its ends, of a valve casin arranged between said openings, a suitable slidable valve workin in said casing and ada ted to alternately cfose said openings, sai valve bores o. ening through a side and an end of the va ve, a piston upon the valve and means for admittinga fluid under -ressure upon either side of the piston, said uid exhausting through one of said bores as and for the purpose set forth.

WILLIAM HUGHES.

Witnesses CHARLES GALLAGHER, HENRY GrBBoN.

having bores in its end portions each of said 

